Granite River Trading
Digital asset market maker providing liquidity and OTC services
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About Granite River Trading
Granite River Trading (GRT) is a digital asset trading and liquidity services firm. Its businesses include market making, over-the-counter (OTC) execution, and digital asset treasury management. Its core strengths are synchronized quoting across multiple centralized and on-chain venues, maintaining order book depth, and continuing to provide liquidity during volatile periods; it also uses smart order routing and order-splitting strategies to reduce market impact for large trades. The problems it addresses include fragmented liquidity across venues, difficulty exiting large positions without moving the price, and passive AMM liquidity being vulnerable to arbitrageurs.
In the past six months, the company rebranded as GRT in March 2026 and continued operating with an institutional focus. In early September 2026, it announced connectivity to more than 25 centralized, decentralized, and on-chain venues, formally launching as a principal trading firm. Public materials also discussed CEX vs DEX liquidity differences and OTC execution advantages. No material negative information was identified. Note that "Granite River" is a common name and unrelated projects exist.
Co-founders and core executives:
Josh Gibson (CEO & Co-Founder): Nearly 20 years of financial markets experience, previously spent five years at GSR. He leads strategy, commercial growth, and global expansion.
Juan Marquez (CTO & Co-Founder): Former Head of Engineering at Keyrock, led the team behind the market-making platform. He oversees GRT's trading and liquidity systems.
Kalon Jarvis (Head of Trading): Nearly two decades of derivatives trading experience, held senior roles at Auros and Cumberland (DRW), with expertise in algorithmic and proprietary trading.
Granite River Trading (GRT), a principal digital-asset trading firm, recently expanded its leadership team. Josh Gibson joined as CEO & Co-Founder in August 2026, bringing nearly two decades of financial markets experience, including five years at GSR. Kalon Jarvis joined as Head of Trading in June 2026, with over a decade of derivatives trading expertise across major firms. These appointments strengthen GRT's institutional-grade trading capabilities across 25+ venues.